by Kastro
Paper/Archive/CVE-2026-64160

CVE-2026-64160

Linux Linux — netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 36.9.369 × 207.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.

Affected

ProductAffectedFixed inSource
Linux4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 – < 55970f238d495517edc961d55c44c772594d096955970f238d495517edc961d55c44c772594d0969CNA
Linux4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 – < 2c8f4742bb76117d735f92a3932d85239b16c4942c8f4742bb76117d735f92a3932d85239b16c494CNA
Linux5.18–CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969refgit.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494